payne



F. O. PAYNE.

MANUFACTURE OF SPIRAL SPRINGS No. 50,622. Patented Oct. 24, 1865.

O C W H i a Wz'bwmes:

UNITED STATES ATENT OFFICE.

F. C. PAYNE, OF NEW YORK, N. Y.

SPIRAL SPRING.

Specification forming part of Letters Patent No. 60,622, dated October24, 1865.

' following to bea full, clear, and exact description'of the same,reference being had to the accompanying drawings, which form a part 0this specification, in which- Figure 1 is a side elevation of a springcon-- structed according to my invention. Fig. 2 is a plan view of themachine which is used in first-quality wire; and to accomplish this end'I twist the wire in 'a'dire'ction the reverseoi' the spiralcoil, therebyrendering the spring both stiffer and more elastic than if the wire wereleft inits primary condition.

In order to instruct others skilled in the art to "apply my invention, Iwill proceed to describe it with reference to the drawings.

The spring A, constructed, as shown in the drawings, .of a shapesuitable for a mattress or cushion, is formed upon a mold in the usualmanner subsequent to the wire being twisted. The grain of the wireafterbeing twisted runs in a spiral direction, as shown in the drawingsby the faint lines a a. a a, &o., and resembles in some degree the twistof the fibers in the strand of a cord or rope. This twist gives thewire, when coiled to form the spring, a highlyelastic property, besidesgiving greater stiifness and strength to the sprin Any pressure broughtto bear upon either end of a spring so twisted has'a tendency to stillfurther twist the wire, and this, acting against the counteractingtendency of the wire to untwist itself, almost doubles its elastic 0rspringing properties.

1 The spring may be manufactured in various,

way s, butthe machine represented in the drawings is-well adapted forthe purpose. In a suitable frame-work, B, there revolves a flier, 0,containing a bobbin or reel, D, for the purpose of holding the wire.This flier is set in motion by suitable gearing and pulleys, and has ahollow spindle or shaft at the end 0. The wire passes from the bobbin orreel D through the hollow spindle c to the traveling guide E, throughwhich'it passes onto the mold F, which is made removable and in twoparts, and can be turned either by power applied by a belt to the pulleyb, or by means of hand-power applied to the crank d.

The mold should revolve about one-third as .fast as the. flier O, inorder that the requisite degree of twist may be given to the wire, whichtwisttakes place between thefiier and the mold.

After there is a sufficient quantity of wire wound upon the mold theclamp or griper G is then brought into requisition. The wire which hasnot yet been wound upon the mold is secured by the eccentric clamp Gr,Fig. 3,

which hasa toothed or rasped surface, g, which F. C. PAYNE.

, Witnesses:

J. W. GOOMBS,'

G. W. REED.

